True Sense Technologies

This is a Digital TDS Meter Tester used for measuring Total Dissolved Solids present in the water. To measure the purity of water, please use the following instructions.

Operating Instructions:

• Taking TDS MeasurementsRemove the protective cap.
• Turn the TDS meter on. The ON/OFF switch is located on the panel.
• Immerse the meter into the water/solution up to the maximum immersion level (2 inch).
• Lightly stir the meter to dislodge any air bubbles.
• Wait until the display stabilizes. Once the reading stabilizes (approx. 10 seconds), press the HOLD button to view the reading out of the water.
• If the meter displays a flashing x10 symbol, multiply the reading by 10.
• After usage, shake off any excess water from your meter. Replace the cap.
• Taking Temperature MeasurementsOnce the meter is on, the temperature function can be used at any time, in or out of liquid.
• Press the TEMP button. The display will switch to temperature (in Celsius only).
• To return to TDS mode, press the TEMP button.PrecautionsThe meter is not water-tight. Do not dip the meter beyond the water level limit.
• Do not store the meter in high temperatures or direct sunlight.
• Do not attempt to open the housing or tinker with the electronics of the unit.
• After multiple usage, if the product is not showing correct readings, please use the recalibaration guidelines as given below.
• Re-calibration GuidelinesImmerse the TDS Meter into Calibration solution up to maximum immersion level (2 inch)Reading appear on the Display.
• If the meter does not read within 2% of solution. Press Temp key for 3 seconds, Display Start Blinking. Adjust the reading by using “Temp” key (to increase the reading) and hold key (to decrease the reading)Press Temp key again for 3 seconds, meter enters in Testing Mode. Take the TDS Meter out from water Wait a moment, after showing Zero put the meter again into water. TDS Meter show Readings.
• If Reading is accurate calibration is completed. If not, repeat the procedure

Features : 
Easy to read and record, with lock the reading, and 5-minute auto shut off feature. Ideal for test pure water production and consumption, electroplating liquid, boiler water, the fish tank water, swimming pool water cleanliness, photographic rinses, well water, deep well water, laboratory, aquaculture, food processing, family, office, physical and chemical teaching, ionization makeup water, municipal water supply, travel health care etc.

A CM-01 TDS Conductivity Meter measures conductance by means of electronics connected to a sensor immersed in a solution. The analyzer circuitry impresses an alternating voltage on the sensor and measures the size of the resulting signal, which is linearly related to the conductivity. Because conductivity has a large temperature coefficient (as much as 4% per °C -see Fig. 1), an integral temperature sensor incorporated into its circuitry adjusts the reading to a standard temperature, usually 25°C (77°F). Historically, the unit of conductivity measurement has been the "mho/cm" (a mho is the multiplicative inverse of an ohm). A resistivity of 100 ohms x cm is equivalent to a conductivity of 1/100 mho/cm. TDS Conductivity Meter measures conductance by means of electronics connected to a sensor immersed in a solution. The analyzer circuitry impresses an alternating voltage on the sensor and measures the size of the resulting signal, which is linearly related to the conductivity. Because conductivity has a large temperature coefficient (as much as 4% per °C -see Fig. 1), an integral temperature sensor incorporated into its circuitry adjusts the reading to a standard temperature, usually 25°C (77°F). Historically, the unit of conductivity measurement has been the "mho/cm" (a mho is the multiplicative inverse of an ohm). A resistivity of 100 ohms x cm is equivalent to a conductivity of 1/100 mho/cm.

Measuring range :0.00-14 .00 PHAccuracy: +/- 0.1PHResolution: 0.1PHOperating temperature: 0 oC~ 50 oCBattery: 3X1.5V (AG13 button battery type)  (not including batteries)Dimensions: 142mm (L) × 29mm (W) × 15mm (H)Weight: 51 gPH meter calibration while increasing standards:1, the pH electrode into the pH value of 6.86 (25 oCc under standard mixed phosphate buffer solution, and gently shake.2, with a small screwdriver adjust the calibration potentiometer until the display value and the standard buffer solution at ambient temperature ph values.3, the electrodes into pH4.00 stupid phosphorus or potassium acid borax pH9.18 standard buffer solution.4, after about two minutes or so. Shows the pH value of the buffer value is compared to the error should be within the allowable range.